Knob attachment



0 0 e1. M d J. ANSPAOH & 0. REBSTOOK.

v KNOB ATTACHMENT. No. 511,18. Patented Dec. 19, 1893.

INVENTORS 4 WITNESSES UNITED STATES PATENT OFFICE.

JOHN ANSPACH AND CHRISTIAN REBSTOCK, OF BRIDGEPORT,

' CONNECTICUT.

KNOB ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 511,185, dated December 19, 1893.

Application filed April '7, 1893- To to whom it may concern.-

Be it known that we, JOHN ANSPAOH and CHRISTIAN RnBsTocK, citizens of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvem cuts in Knobs; and we do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention has for its object to simplify and improve the construction of knobs and their attachment to the spindle so that the use of washers to adjust the knobs to the thickness of the door and the use of screws to attach the knob shank to the spindle shall be wholly done away with, and furthermore to so construct the knob as to permit an ornamental device or a name or number to be exhibited through a glass and to be readily changed by removing the outer portion of the knob without disturbing the adjustment of the knobin the slightest.

With these ends in view we have devised the simple and novel construction which we will now describe referring by numbers to the accompanying drawings, forming part of this specification in which- Figure 1 is a vertical section of a door illustrating in section the construction of our improved knob and the mode of attachment to the spindle, theline of the section being indicated by m :10 in Fig. 2; Fig. 2 a section on the line y y in Fig. 1 looking toward the right, and Fig. 3 is a section on theline z z in Fig. 1 looking toward the left.

1 denotes the door; 2 the latch case and 3 the rosettes which may be of ordinary or any preferred construction. 4 denotes the spindle which is provided at each end with a threaded portion 5.

6 denotes the base of the knob and 7 the shank formed integral therewith which is provided with the usual angular opening to receive the spindle and the inner end of which fits closely in a recess 8 in the rosette. The base of the knob is made hollow as shown and has within it a hub 9 extending outward approximately to the end of the spindle.

1O denotes a socket in the hub which ex- Serial No. 469.379- (No model.)

tends down into the shank of theknob and 11 denotes a nut within the socket which engages the threaded portion 5 at the end of the spindle and is provided with key holes 12 in its outer face for convenience in adjustment.

13 denotes a spring lying between this nut and the end of the socket. The outer face of the base consists of a shoulder 14 auda flange 15 surrounding the shoulder.

16 denotes a metallic back plate lying against the shoulder, 17 an ornamental plate, or if preferred a name plate or number plate which lies against the back plate, 18 a heavy glass disk lying over plate 17, and 19 a ring adapted to extend over flange 15 and over the edge of the glass disk and having on its back a flange 20 which extends within flange 15 and is locked thereto by set screws 21 or in any suitable manner. Should it be desired at any time to change the ornamental plate, number or name whatever it may be it is simply necessary to loosen the set screws, take out the ring and glass disk and insert whatever ornamental plate may be required. The disk and ring are then set back to place and secured by the set screws orin any other simple mode that may be preferred.

We have used the singular number for convenience in describing the parts of the knob, it being of course apparent that the two knobs illustrated are duplicates, and that it preferred any other form of knob may be used on the inner side in lieu of our improved knob. In placing the knobs and spindle in place the spindle is first inserted and the knobs are attached one after the other. Supposing that theinner knob isalreadyin place, the operator takes the base of the outer knob, places it over the spindle, then places the spring in the bottom of the socket, and by means of a suitable key, not shown, turns nut 11 down closely upon the spring. The spring is a strong one and is compressed closely enough so that it will hold the knob shank firmly in place in the rosette. Having adjusted the spring properly by means of the nut, the nut is locked in position by means of a rubber nut or plug 22 which is provided with a central opening and is preferably turned on over the threaded end of the spindie in the same way as the other nut. This rubber nut or plug servesa two-fold purpose. It prevents the possibility of nut 11 moving on the spindle and also presents a firm but not absolutely rigid backing for plate 16 and the ornamental plate lying in front of it. It will be seen that this construction enables us to use our improved knob upon varying thicknesses of doors, that by means of nut 11 it may be adjusted so that there will be no endwise movement of the knob, that the knob cannot turn upon the spindle owing to the engagement of the inner end of the shank with the spindle, in the usual manner, that all external means of attachment of the knob to the spindle are dispensed with, and furthermore that the securing device used is locked in a simple and practical manner so that it is impossible forthe knob to become loose on the spindle no matter how long it may be used.

Having thus described our invention, we claim 1. The combination with a spindle having a threaded end, and a rosette having a recess -8, of a knob having a shank engaging the spindle in the usual manner and provided with a socket 10, a spring in said socket surrounding the spindle whereby the knob shank is held in engagement with the recess, a nut engaging the threaded portion to regulate the tension of the spring, and suitable means for locking the nut on the spindle.

2. The combination with a spindle having a threaded end, and a knob having a hub 9,

and shank 7, and a socket in said hub and shank, of a springin said socket surrounding the spindle, a nut engaging the threaded portion to adjust the tension of the spring, a rubber plugin the outer end of the socket which holds the nut against turning, plates in the outer face of the knob which rests against the rubber plug, and suitable means for retaining the plates in position.

3. The combination with the base having flange 15, a hub 9 and shank 7 said hub and shank having a socket 10, ot' a spindle having a threaded end, a nut in said socket engaging the thread, a rubber plug in the socket outside of the nut, a back plate, ornamental plate and glass disk lying'within flange and resting against the rubber plug, a ring 19 having a flange 20 lying within flange 15 by which the plates and disk are held in place, and set screws engaging the flanges by which the ring is locked in place.

4. The combination with a knob having a socket 10, shoulder 14, and flange 15, of a rubber plug in said socket, a back plate, ornamental plate, and glass disk resting upon said shoulder and said plug, a ring 19 whereby said disk and plates are held in position, and suitable means for locking the ring in place.

In testimony whereof we aftix our signatures in presence of two witnesses.

JOHN ANSPAGH. CHRISTIAN REBSTOOK. Witnesses:

A. M. WOOSTER, PEARL REYNOLDS. 

